{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424993",
    "entityType": "User",
    "nonce": "0xb218886c8eea91037a8de91e18c1e3bcf7ea9c53195373257d46cf47f4746c39",
    "signature": "0xb426ce889fb8154461fd532c42d5d2cf30af0a1eaa01cf63307f58462a5c87805ca6ddf044fe4748e4583657230fdc59f1575c42da813a932c76c9168a43f7ee1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}