{
  "manageEntity": {
    "action": "Save",
    "entityId": "797727474",
    "entityType": "Track",
    "nonce": "0xbc43f86249355a4b65fe252b117d77f8004feba0dc927ae639044a985bf2ec03",
    "signature": "0x12a8a2f1ef4c08c22f492ac1d8a90bd2ae0a7ecbbb180795d6fffcdf1941e83520381daf5e8e5513f1b28873fe4ea6f38895938ef9dae7b10bc6154f105e8a211c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}