{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x4910c41a7ddd99f78d0e7f2b7ea5a5f14b021a68864fe9b75b41272be8fc58d5",
    "signature": "0xee842233b4c16a22c0409d8abdb629ace8c9883ab5b8d39928b342eb7f0ee1535ba30e1dbc2be2d0ad5bb61528baafc974286b0dd7ec7b0c9e5b51bc8ec922351b",
    "signer": "0x216E3DcB84F1654f711041294908a8f8ADb25766",
    "userId": "643512122"
  }
}