{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "579726392",
    "entityType": "User",
    "nonce": "0xbf2c944996cb9732b09e01d0e0791787f952228ade872986fa03b8a68acc6277",
    "signature": "0xf6ebb7921f6bb9d33969d14ec411c2faeb802a4e1d81bc143d1f3e8ac08e7eb9693b6ad1a3caefb2bcb89efe9ce0a6335cc08bb848218cd2489255aa099a29c81b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}