{
  "manageEntity": {
    "action": "Save",
    "entityId": "110788",
    "entityType": "Track",
    "nonce": "0x6441fb822bfdb102e750bacd90ce6c14a12c720f4b5104f43364a04ff07464c6",
    "signature": "0x14f591c4c4bf1b2f8d033da990c519f445e9ba37501a030107e98cbdde9ca6726eb881b031af07848993d0d4d3e8823f1ea96a35d41db4ea8e190b19054b0e021c",
    "signer": "0x658704f5E9496548E3179a01fe1F54ac2a0b77a4",
    "userId": "188933"
  }
}