{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075202161",
    "entityType": "Track",
    "nonce": "0xa35a80465150067f40e78371892ac1221e4767156e57f046b94c026cdb7bbf81",
    "signature": "0x226dcd9ccd848aac8ff527b9ad23c4e44e1b5fd943073242f8942ee2d919f4324de22a69fc4622dd195d299a0dc13793980fb8c9d09dad2dcec63fa0c22fc79d1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}