{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "395863",
    "entityType": "User",
    "nonce": "0xa2e06b5e18db77e20ada1686ec445e384ab461ef74b0d42947c16b125097d46d",
    "signature": "0x448f2400bb306f07c2d0052ed609bbbf3e327e1909e703c8efac9102edef47cd2a99ff20d384d84d28b7af6e2e4a7d0ea48f325ab3f57f947f6529401bc91e951c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}