{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761931434",
    "entityType": "Track",
    "nonce": "0x8dad88f45795f496ba3094f327cc3bbc3cc119110a49cc8165b5f4a7aba1a515",
    "signature": "0xa225c16bc134326c40a1472734cf85f8dff159e18bd67d67bc052d95a863ac6e2c9472c4988416bea5b3e9d6891f616f4c06375e3cda3acd0e36595537a0f1ad1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}