{
  "manageEntity": {
    "action": "Update",
    "entityId": "768051251",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7267523791414f3102be660c8a640a82c4efa83368f0f6a904dbac89be9b01db",
    "signature": "0x991980c9fbec31e8563fce22b90119bfdb00acd988956fe0d4bf4c7f2b7f1498053fb5041242210a162773751fa4e7043a5e492e040ffc17b1bd3711f645f2f51b",
    "signer": "0x43dCdB533Bf127Eb0De34a31D2C1bD2D9e0C9482",
    "userId": "768051251"
  }
}