{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036083138",
    "entityType": "Track",
    "nonce": "0xc5f850f387ee9624e2ce0dcb027f0fe8e35145bfc0210e58cb4d365340b6bb6b",
    "signature": "0xc9eec368f1611287a4f991aa33207872975b9bfaa6606c47a8af275d6dca2e597c634e24c03aec78c9a7148d7ccd2bd797a67b366eae4fb2b9035619d23476651c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}