{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd158d42c6ac4a3ff71887dfa630df02e85828ea76ac79d7ce6ea128a6bf81366",
    "signature": "0xa2a3cc799d897f6f58b5c75629af2a88e2124c7c7bf014ff6e22fab202019c6067605824bdc399d40782f0eedbf190f57893bec4941c2a113928748f1a21abc41c",
    "signer": "0x850651f846cc7Baa00FE2894e6086f8087eA375b",
    "userId": "737654695"
  }
}