{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "636236864",
    "entityType": "User",
    "nonce": "0x8b4874abc98695affea1fe6d666230267b0d6138cfadaabb680c47f458eae3a3",
    "signature": "0xbc4e46f9e73807c55ad88a662f400924d7d31d9ed3ace14e7ce0cfdbcd413e4438aaad4272bb88f7b741f61a923fcdd7c32e0fdd28ab7fe06f28f17e6982a2301b",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}