{
  "manageEntity": {
    "action": "Save",
    "entityId": "1534278982",
    "entityType": "Track",
    "nonce": "0x9962c0b4322b7c216c7d4fd7e1c2676893a7af3732bfb6c25f29e366ce26f193",
    "signature": "0x12c1693b2ff43ba5120f4e5090a6adf43c81441276f668738340a28ddf29581053b3268ff85018033e284ea4b1c56892353ddfed32467bfe7c0c657069765e2a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}