{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeda7c2f139c88a63ce16385ac6ac76fa9e943c653f637e72c5b10da2a002bafb",
    "signature": "0x0b57546ee70a8c07eaafd73b98437b97adda8d70f1acc1589cd1e00aa89decfc28794171c0809be9038873611a045e0686281ccda3e4655d96ed8e35fe16f30a1c",
    "signer": "0x44F866BD6c3cA5f4aA70Ff1dF249e392116efc2c",
    "userId": "288476830"
  }
}