{
  "manageEntity": {
    "action": "Save",
    "entityId": "1058518942",
    "entityType": "Track",
    "nonce": "0xf71f0ce2b22622f21418bfeee6ee184ccc04e9215a362e16ff01c5fa3350f943",
    "signature": "0xa27d3be4df176addbf1e6da4c6fbe1325cfb3172658d4ae0fa66c3cee999112d7b9ad4d2c86946bba2ef1ef4cffca199b8e6d0ae5cab0563e40cb04c053a206d1b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}