{
  "manageEntity": {
    "action": "Save",
    "entityId": "1870556914",
    "entityType": "Track",
    "nonce": "0x9ae7380d1981d3f04ea6442b6024373177b34bfab7675b4b600ac0bd4d545ac6",
    "signature": "0x793b60742ae9409d95de35f88a0062691814d887010691a00fc557094e58540340b74fa90a85e413d77d129854f323e898a3f3de38d7394d0e5a46ed2e93d0fc1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}