{
  "manageEntity": {
    "action": "Update",
    "entityId": "597777529",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe57ef8f4229befcc33a35e874d5424eed1e8c0392dc9e8776e9be199acb86030",
    "signature": "0x5309b452ce7589b0e3f6629bc3b887213f7d50b6d570bcaaba535740a539acc1353432f64a4049d18cc32dbc8a37158e778483958d3a8fac9a837c8c1cb8ef9f1b",
    "signer": "0x46Db588d6D6D1fD236791729A7f4eb4F34B59c8e",
    "userId": "597777529"
  }
}