{
  "manageEntity": {
    "action": "Update",
    "entityId": "400764322",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1931991e2dd12e3e016a096575f8bb09b4ba64a0e16e21962c838f632c0a27a5",
    "signature": "0x2ac9f43e22b52156538b8309fb8ab1e1703ba910ed35ff172ce7552e9ce874d8432cc325cd2c921fa725e208e7f0b1f8eb8631cda17f5288cd4b26d98391c0841b",
    "signer": "0x855834AEF9124B75c20FE25D036640277F9eA157",
    "userId": "400764322"
  }
}