{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2987",
    "entityType": "User",
    "nonce": "0xadc180a39126216fb99e47489ac3ef769956f8eb3db55aa1ca671d0cefc1e05b",
    "signature": "0x1971a806eff592444f0bd302dc18203f989bb05076cf78942d3864868d79f7613fe143802226ee8640073a1d86c2234f19e17c0168dfd20c3d02023d5bd70a011c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}