{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0x03f6803698d4bb5394adb86cf0125e6c976b51692da5d8aedc8f2829f70e7628",
    "signature": "0x97974b6aa13c7c695092e1b854249ce4870c58de4095487e431f8180c9ca57a000edb4abbbb7b5f5794f6d7236e0bd99e662a3f2c2ffa8071b47e51afc90270b1c",
    "signer": "0x4655f3313c8218Ab2B7384fad47CEcd4FEB5f243",
    "userId": "854821388"
  }
}