{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x1b87177abacf08df40b58f15782a22bfa29b7fca506b37d20da160ac80174999",
    "signature": "0xf3b1b1b0b1c344c64f18b5275c5d7e08ee4cf9ff8c12f20356d9c6f89c73c5b42fdab62cd8a755b661839d1162b5a21776092ccf5846d024d118ed9319d52b561b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}