{
  "manageEntity": {
    "action": "Update",
    "entityId": "149429484",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera3uuff4yza7d5beuazpmxnb4nq4xqaocgtqxqjp3wnhi6tdfnotwa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1806360354},{\"type\":\"playlist\",\"playlist_id\":1560355174}]}}}",
    "nonce": "0x0909d70d2976a203c638f868693786ff2d5efa8c86bacacc3e6368ff0801e9bd",
    "signature": "0x337443cfd9455b44c244d99b1fbd9535620a5dacb8f844cfc903590ccdf3198a4b7fa96426052753e510c3064c4dd3397b26a684a138c304ef08793dad7de1091c",
    "signer": "0x9cC78fE5F75781C73C1C6D67045d681C8a4C6c9a",
    "userId": "149429484"
  }
}