{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105105987",
    "entityType": "Track",
    "nonce": "0xca5c5362ffe6b6a91644d0e01e55e0dbfa8409b43fcb65a727757386d800323a",
    "signature": "0x98fecbf433029270181315e70f5a728dd0ab1f7f13e10100d267666ad499c2d739f74794474879abe4732f9dc7a95eccab3ed3d26805be5633bd358b4265178e1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}