{
  "manageEntity": {
    "action": "Update",
    "entityId": "145298053",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc7c36ddfb67f4f74ff3de3ee7e5dc11c87eb0fe4cc6f6e755dc4c8746a85f0d0",
    "signature": "0xcf24b0d67e4d688d3a799f1222f41f3bd42d6685ccc8c78136345bd14481fd6e6f72bc30fef7bb45fc6681332b4cc3529670b493a8fb6de9d55ee892d515d9a11c",
    "signer": "0xcE9E9De635BD9160235b75107cFA4BEda4Ae4DeE",
    "userId": "145298053"
  }
}