{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5e4342a9d11c30ca44880cfdb11a43123cce53b5fdefe74027347cd65661b4f8",
    "signature": "0xd9a8559ef99ddfd2bef75590d7de9e4c865cabe4825c1986ab6339feee57b03049e85063bb560f007a78bc64df3955d140053e2fcafda4e0dad4607fb1be41f61c",
    "signer": "0x8c74Da616B2aFbbD97c2a77c44B9600E970Fb1e9",
    "userId": "448171473"
  }
}