{
  "manageEntity": {
    "action": "Save",
    "entityId": "1319254312",
    "entityType": "Track",
    "nonce": "0x6c32805b822c1af2253f5fb1ca77994b92fbf0c81e90e3d04f81886053ac370f",
    "signature": "0x2ed0672881d8c26324a01e5b82393ff3acd7b6b50eaaabfb432567bc569b6c1b011d36451cb3d03dd2b95911a2e220484f8f7705c95ec0bd90abd9ebb21ebb801b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}