{
  "manageEntity": {
    "action": "Save",
    "entityId": "1948264142",
    "entityType": "Track",
    "nonce": "0x6fb9710b8803fa6d16a719b5031985372c26f8db05aa5e525a23ca4882ff9f91",
    "signature": "0x03a4d4ac7824d83001c3f8d56d8fd0b612a7ca1844e6637df166908947dac5016a1eb2a9035fbe888e04cac8dadea98702f76c3eba8e4158055afa461d411d791c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}