{
  "manageEntity": {
    "action": "Update",
    "entityId": "464662154",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierase47bmfizhqcazaxbadpbrc2cldoj3tgiakjevbtfzylh3usivta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":163368378}]}}}",
    "nonce": "0xa33003516e4b8458eb5175e63166ccf9283183fbbc8379618755ddc1ec4ec833",
    "signature": "0xe7c8b68b10061b2ffa4a5dd17792d37a5e2a67b6c5e11cfefcbaf9ff07952f3a7871ddbd522f511bf97099bc2e13677e02d3802b400502a5e5451a68a76424f51b",
    "signer": "0x8BCD75b80A99F1c331B52ccc718eDc0147543624",
    "userId": "464662154"
  }
}