{
  "manageEntity": {
    "action": "Save",
    "entityId": "1720078131",
    "entityType": "Track",
    "nonce": "0x181665d2861f139a099a990370ec2587606a8cb474e34f0724a5b7323dadb71e",
    "signature": "0x4461062d0a8b46a40e8787d706f7dba1d76bfd93edbdb593dcde75cf4ace146c1ae0ac9b1de1c0f1754314631da5ccf85b42a67e288306e946db20320f35287d1c",
    "signer": "0x8E12224e4dDc1BdfeC3d5Bf01DB7e4Ec17403ABa",
    "userId": "627040654"
  }
}