{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312438005",
    "entityType": "Track",
    "nonce": "0x7b0bd7d8e90a03f262bc9a4784fa39a9d62f07b792e14293f61609665bfc39b8",
    "signature": "0x613f2f7702e533ee81bbc9ee0ed7309cdf0e1769b2a65e1e4162e9b620703a4e153fcf8dd84793610d1d658bb6dc16158e6903b4055f3ccaab23f758a276a55c1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}