{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753401661",
    "entityType": "User",
    "nonce": "0x1efd165c3bfcd23173959ba39bf2516bbfb1bc2c1e634557da7b6d02121c8d10",
    "signature": "0xc03e02fc4e299bb05feed8d028e876cd3137744fbf0390fd4bd8b48c572d09e17b5fe20e889e4aab935a5ff7ed9e79799ec2fdd1bbdd86fbe2b354f4a0b850ab1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}