{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a26f10b9b189e7d6ffd74b2581a5a687c99f3fe4441a7e8a773cd13789b2558",
    "signature": "0x4427e42edf4c5d3392a1ee247dffdcb862fd15d8414595899f0467e742dd1e0d6acb05a476b2c008e4485eecc9ffdc06ecc7c344c64d9c059338e2ae1c1b7e791c",
    "signer": "0x101cd12F807db492Ae8eDa9A826AF9946E35D708",
    "userId": "99354248"
  }
}