{
  "manageEntity": {
    "action": "Save",
    "entityId": "1011569306",
    "entityType": "Track",
    "nonce": "0xf89c119bab992cc364f85979a09fe19d16bb4f87d0bf07cca3eb66b7bee9ca82",
    "signature": "0x824d245ede5804d630989495140014ec7aa6ff2b0a7e5464b67d662e57bfeca0035fa1ba4425b0f8486daccfa5e36fee7d0b60fba4ccb2e2f0fb68be5aa345e51c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}