{
  "manageEntity": {
    "action": "Save",
    "entityId": "1935175358",
    "entityType": "Track",
    "nonce": "0x1049c59b603a6c8adeca767f1ba37818f9adbca0e7ebf384721af3c6698f6cd9",
    "signature": "0x0703162dc0369a3cbd67c7c6074dcdf48ea4a461d0c8eb92aa2656a56ca322f76e551998655fcf088f6e2d20055a4ded4feabc590e5692ad1849c9828f13c4ea1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}