{
  "manageEntity": {
    "action": "Save",
    "entityId": "1985116956",
    "entityType": "Track",
    "nonce": "1790291616809194877",
    "signature": "0x4d5920834f02bc0b47fe19bf78c4ac1cf22d8c70903a76c45269a0c730ff74347005d3c478d06e36018f537e025cc09eccc112b118febc2268fe0bc2b9811eec1b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}