{
  "manageEntity": {
    "action": "Update",
    "entityId": "495478149",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe9671a112727a3c5bc9f57a59350526adb0812718015abfbb214d2486b178f78",
    "signature": "0xa0a183435b018f22809487ad391a46d6e5cb8ba1fcc382a503b37bcd5537e50b68bc98f3a18b2416940b9226c9275bd709b2664507a4aa546f6f7fbebc6632071b",
    "signer": "0x1a1f922FA34628C623f6841142A7b2e240047f22",
    "userId": "495478149"
  }
}