{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182773693",
    "entityType": "Track",
    "nonce": "0xd0cee6d3647d0e89396277ef9e070b97e3c67ab6e874c4684c7465583be6295a",
    "signature": "0xf78b0275f3825946e249ae1989ff1972ea5ecf9d378554e533985a9f0bcf5ae94ded90a1f70832ea2951628454acb154697d1cba8aa52676b5f8bed25e06b7d51c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}