{
  "manageEntity": {
    "action": "Save",
    "entityId": "1953377176",
    "entityType": "Track",
    "nonce": "0x5d650937917aa1dd3b2766addec1c877c97b7d9201430617669bc94de487c868",
    "signature": "0xca6dfeea1c94b78fe72d2d0b63698e9d907f8c5ad1acdd4b651eb663bd4eb8ab11fcbdbeba2d988b4214f415505fb30c64fccd943b7f1eeff345b7585f6f19ef1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}