{
  "manageEntity": {
    "action": "Save",
    "entityId": "1124671052",
    "entityType": "Track",
    "nonce": "0xccd8848ce1ebd980652089434349f9fb3a43718b85a8d84381f61c827aa08346",
    "signature": "0x3c54f502d1b0d5b04d3d105a7627040038667aa7a1de8433ca0a4491c3f18a315d41af0b6021c9d7e9f27c5f2f0f27b593935bbb102bc5b03cfd842a349c44bb1b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}