{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "769526412",
    "entityType": "User",
    "nonce": "0xe6ed6a8f49151d39eef24bf68fd43d350ff5ce35feb2e200dbb1edbd7b0a512c",
    "signature": "0xf48cb09a79518cb3cecfdfc81dc6f0e7c2e0bd00bcdebf05bae234bed0e0403b4780a114796d33136582f7c30d71d6dcce44294eabc96aaf6830d2037d68fb9f1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}