{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x8dde05a90209fef6ed104b5cf37c42b6b623ed3293fb743a3e1186f05340cb2e",
    "signature": "0x6deef9f7d2101d38cf46137f15a22fa26a647ab35201c0fc6c7adcce70fa01c414021ea9d5a37ddcc5b21bb674c0b4a3ff5b0d95aeb136e530653b90ed20c5c81c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}