{
  "manageEntity": {
    "action": "Save",
    "entityId": "1359719998",
    "entityType": "Track",
    "nonce": "0x05c851eaa035941955f50cb2625b64bad32494e2df9c924432acb8a77d40703a",
    "signature": "0xa178930d1fd900b61e1f528c28421e6a1c378797b62dacdaf32603ebf5d344da233eba4581aed74a038acb533a347a12475160cc4ebaaa02297a46f4bb65cbdb1c",
    "signer": "0x9668338741f0B2F3bcc87715a755f7FFACcEd1D6",
    "userId": "945181225"
  }
}