{
  "manageEntity": {
    "action": "Update",
    "entityId": "783214783",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8fb5921e0fd78f45d9f4019c345c92d9badfbfaea2c2c017d2b31d3bca8f6f4e",
    "signature": "0x302b72e0fbfae7ace5e956f499bdeb9b890e05971a5f77d88500c08549f9a4dc353f422f4571f8103f4676b130a1aa5a887812355f77e5aed5acbe67d019b80b1b",
    "signer": "0xD0e0324a931517A73FEeac96Ec0Ce3e14750ccF4",
    "userId": "783214783"
  }
}