{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666103786",
    "entityType": "User",
    "nonce": "0x8ca50ef6934423c2d9ff07ebc961619309cd3838c84b2e1ff6dae1da94f632b1",
    "signature": "0x214f4165c72ff60d932329237b0ffa6cf5f729ca8f4f5cad87d573cddcebf861354b5bfc7101c8610b41567c2d09c9a8627c29a2b277ca869b054c1e623c7a8e1c",
    "signer": "0x65dB542f2aa3d2f8e17Be4066a7D406F7A5b26a1",
    "userId": "851742313"
  }
}