{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7645",
    "entityType": "User",
    "nonce": "0x55e30545cf741b80b1b5739db93d0af93181b2eb4f111af5ab6760259e909ce0",
    "signature": "0x406d20348d4c0fe99bf8ef27249b2d3d78796d6462bc9ff65eab8d62a83c4d4c673c1161b48e14deaea7954eb94ee0412bb465be0766e1bcaab8d1464bfc3f371b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}