{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990317305",
    "entityType": "User",
    "nonce": "0xf89d0f5ec0866d6afbf9597aff13d4ef52815eba0948ff56d9146d7db5e0e173",
    "signature": "0x96aeac0a807a33a450979d2b74a66e1f58ae9cd3cd5af36ce47745e6035834b132ed164624c22d27f3a7663f702b3fa86eb24c326e249f5a6a899f394a559b3d1c",
    "signer": "0x705C3Be1F27A9694A390A0a58287440a6b43349E",
    "userId": "193978537"
  }
}