{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319492063",
    "entityType": "User",
    "nonce": "0x950a411579f7117682a661bad0bd29bf84391d3e35567698ca82f62669d7c4a2",
    "signature": "0x42891a4039d07557a00da72d48a28c873e17557bcf78f88372ef4d9cfb9e13a43729c610f2ddf9c451e0884d4ea1c570a35bbb04a89a247ec152bb2930e259131b",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}