{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212873",
    "entityType": "User",
    "nonce": "0x85072c7af3ae03b86532acf5dc5dc2f260e882961ce28f9eb2f46982317b1297",
    "signature": "0xc812833478f100f900292ab5592c76459ca6b5eda08a608b405b3136126038e53b62060b4c2e01c10cd50eba6bfd33b722f6d8ec8363e2d0d169fb673b346fb41c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}