{
  "manageEntity": {
    "action": "Save",
    "entityId": "1233091630",
    "entityType": "Track",
    "nonce": "0x5c12f6a20ed470facafca611cbc16262b593d494981efda59b11d72f483ea80d",
    "signature": "0xf305819c9aae30aebe94a1d579fc06cb058f26ba72b0e2aec2c31a155cfaab42664fe9c88dbcd72f2903c685ae885a35048826e8f4dfe1ef17743e20a2d0fbb91b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}