{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396164",
    "entityType": "User",
    "nonce": "0x23d90b4e914835fccdedeed2d62d934b95831b066ebac9e0f6e0d47937f1d1c6",
    "signature": "0x1dda1b81ac8227e155a260682591c1646a5f9e9a122ce9a19f5f3beaf925409021d1f50c1e4156ddd23670f95ad87a44739a013f2f82ac735f023ac7f241251e1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}