{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0x5169f455270c2d87883183ff74afaf2bf2bc56be0bc01773ce90aa4ebf99a55c",
    "signature": "0x905c3a37fdafc19f5d9e285d92f4ffc28d13027229a8017012fbbc1243d851dc635e4e3d5f1171229b2b59095f2206b8450e148d140811ac85c6ef4b9749cf2d1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}