{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086680186",
    "entityType": "Track",
    "nonce": "0x84e7af3709cd9789efb9f220915fd8aa3612147e95b22ce8ebfc9c2e777495a4",
    "signature": "0xc0c31b808902d2b85ccef1ed22981b503805837abe37733b7cbd9532e077f29b40fead2a2b19d207f42fa71e783951307a3342e31992b2cf96b70281efed67611c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}