{
  "manageEntity": {
    "action": "Update",
    "entityId": "149429484",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraqbmscbscno2e5req6ak43abp5fnzg3sjhjvj7shvvbdgl5re3d3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1806360354},{\"type\":\"playlist\",\"playlist_id\":1560355174},{\"type\":\"playlist\",\"playlist_id\":1479103891}]}}}",
    "nonce": "0x312756fd3d32632c6c550a82975df67efc3a7dadc48ee30dedcd2a2090dfc32e",
    "signature": "0xee5560407cd52c269757d8fbffa5d05dd63b6571c25ecc6430f8e4bd948c21673e47034c62368e078b92df11143f01f62f566e10e49acfc8e87ff6d8e34865fc1c",
    "signer": "0x9cC78fE5F75781C73C1C6D67045d681C8a4C6c9a",
    "userId": "149429484"
  }
}