{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5119ea4cdbd4fda437e9ad224034fea8753f39f7de952f7dd67a16f23236efc6",
    "signature": "0x3aee44e78ab1dd0b9678371ffeb4863545f7d27d1181c7791fa47474eb5e30fd14a4cc38bb6693a86b61115e87d984adf5f65f96e27df859b86b5432977539721b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}