{
  "manageEntity": {
    "action": "Save",
    "entityId": "91279",
    "entityType": "Track",
    "nonce": "0x3ee8c3e98f45960877d20a9db48b1a501e7cf8839b7bd78d67efb9f2abae85da",
    "signature": "0xc49afb7e99626ce3341b5eba5d6a2cc899f9b959d1b2405b524049556eb6e8d714a368267d586ee90d58c34b6a6122fb679b97a587976910e169a5f5827812661c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}