{
  "manageEntity": {
    "action": "Save",
    "entityId": "419218",
    "entityType": "Track",
    "nonce": "0x945775707304d655d31bb3bd5cd535ef7a3c34a6632366f5f9fe766743663874",
    "signature": "0x06f62b1cd07e85f55b8d5e83977f85d6114df013aedeaeff3c87d7d63477794d1d90fbe09ba3a32ea1e4ab9fcac9b766eca058fa1abfef0ac88030db6ce1fa0d1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}