{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290536219",
    "entityType": "User",
    "nonce": "0x1eda2aaf0b046fb7026e5d424725125f2a64eddd23bac8ab4aa3c812fc6b0e34",
    "signature": "0xc4ddf559bfa3ff5f981310fcc7422a07176d67f1a251dfb099242c7dcecf43262702672a0744057ae1356a8096e6dfcf70bba6f2413fa1a27b68dbd4f251b00b1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}