{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0x732f6b692de3668410be9415362cb2466e308d7ab9b3bb52aa19409db38ca431",
    "signature": "0xf9c1f5d326f14b5aafbe79dc5536fa746cff5a64d1fd3688e0e04f522a9a5d205db79922115ce570f336203b1252a5097c0724e82f74dfdfdb9ef8a2dcd5c1541b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}