{
  "manageEntity": {
    "action": "Save",
    "entityId": "131160852",
    "entityType": "Track",
    "nonce": "0xc93f8d5c88cf11bfefcc1bafc83734e6d2b2f08b568312f042704b8dd6a9399a",
    "signature": "0x5bd85bd5d988e8958f9fcec5766d2937072cbb8355e4df4915f6e6e3a986f4ff25aedd7ad724f2995a1b94e12c54d54ab502987a3782a41afdce891153456d2e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}