{
  "manageEntity": {
    "action": "Save",
    "entityId": "55093829",
    "entityType": "Track",
    "nonce": "0xa44a0c8c5a4c55936575ea47e739be5cdf5f0c87660b41e63c5d78b5cfadd032",
    "signature": "0x3ed97779a60563fdd35e17cc36a3daf23edad6667e06b7a1ed1296aaa9f8e7ce5900543e240bbd7d00da2af8616a3ae879c0859f712184331abf5c3039ba1a301c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}