{
  "manageEntity": {
    "action": "Save",
    "entityId": "95446",
    "entityType": "Track",
    "nonce": "0xbe6fb7790c8f376b707a695bb7fbdebc4148c279ede243b567efdae69c57940b",
    "signature": "0xaf792de4f51560969395faa7e44391984581ef364a1496022dab321ed163983251bc33894bc58f2de3276a34a5897d34c68d9b2ed282423baea01c049fa8fd4e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}