{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981465117",
    "entityType": "Track",
    "nonce": "0xe3101bcf0022d728b2bd793debf08e228ed5973197c9c551de26c3d7bf3732a4",
    "signature": "0x6827389ca161fa0c2092851f49dc47861df3559b48343ee8d0742dbdaf5b17822c3e63520ac7f9fc6208203488a34d312b9a29c339a3b158b97f159d583768691b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}