{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825898247",
    "entityType": "Track",
    "nonce": "0xbef09d8f3f1a4209b12d4bf4145453375c382567d2145f402a3192916fad4717",
    "signature": "0xd96728680a22f03e4039f26a010ef3291cdf9b1cf4668bfd27bf02bb3b33ee0340581b4eb6b6a62853e51cfd214ad8c4c40043f5b5190627b5e1198d656bcb1f1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}