{
  "manageEntity": {
    "action": "Save",
    "entityId": "410181279",
    "entityType": "Track",
    "nonce": "0xe5a2a7e6d71fac46682def772295b84aed5bebaa86d28e8e9a11ebd5f141485c",
    "signature": "0x24becf18e941bb7011a5472f95fa0055cccf8914d6c5254bb9bdde513661309330ca2c1f7a08858cc98beaab3a6df6f54be21f18fda81d90e96bfdd64ff1d1a71c",
    "signer": "0x316933E449A0b429014E405447c447C9Bc472bE9",
    "userId": "451684863"
  }
}