{
  "manageEntity": {
    "action": "Save",
    "entityId": "1295670091",
    "entityType": "Track",
    "nonce": "0x099c770acd1ffa1be13254242fff88d4f42d2389e4d8ab6ebc4636ad401aad7b",
    "signature": "0x98e5ad9414a5ba770bb7f42c44171d0ec18add5e64e85d04ad9d17ce114f3c3b25d4f8bc8d45931dd77e30adc2893666d61561fb6422df71c62383ccf0cf0dc91c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}