{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x130ae9c11b38bb871d9b3f11a8fc5688be6ae95abfc00d039c33d9bcf6ccfbff",
    "signature": "0xaf59b9fbf7cffcbe4420c87447621376a268ec91db1c0870f7bb7e40215576917ebfdccb8b9a9ec23264601d0614955cb61609feafe2489258959cbd8890693e1b",
    "signer": "0x4df845f0a31d75ecdeF1019e502eCEBCb209BE06",
    "userId": "742768859"
  }
}