{
  "manageEntity": {
    "action": "Update",
    "entityId": "505271212",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x04ae466c627f8127e43db7fcf277e42f44ee85f04aad2060f2772b4111ce2f13",
    "signature": "0x140b38411850849b0c4aefa1bf392a1cff0932b17495c246768c6989e23a64ed7db55a0869bcfeb905f649cd8699d77234294e83d9f369414f6ded7ee5c5c99f1c",
    "signer": "0x90336978123880996d16F1b2ECF206DFf96D3e72",
    "userId": "505271212"
  }
}