{
  "manageEntity": {
    "action": "Save",
    "entityId": "474930017",
    "entityType": "Track",
    "nonce": "0xb395a727e1b0babba52f26cf6c1a928cd358731ebd1da7cf0ceca58170cb6ecd",
    "signature": "0x20fce5da25cf12655d2ad553dfadd2280669fab302852ded769a1eb0f74f65ad2141dccf97510e13acd480f2129de14306e03501ffc373e8c439aa69dc27b0f41b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}