{
  "manageEntity": {
    "action": "Update",
    "entityId": "881446128",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8ef509d99f36bef693a3feb0bb8e0de172049308af8f91876ab66c15d1d4ffef",
    "signature": "0x235724cd842b6deffd438a9b13e6f2e99bacaf49d40a4b50d8fce2023e79d53a7bac28860fa3fece25d7bd92439579e1129492466c6b9974b87273a386b807381c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}