{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x85329b46367aa076c5bbb3ef09e77d9fa74be9e19c5538cf97e1c097e23bcb8c",
    "signature": "0x0f005877c0a07e8820ba80223ebf5c822f862c5a300c2f60ff691ed47a63f54500a5d0f9f52601e24a08f0b51bca84883ea747cfab2390b3f9c11f2341f7ae871b",
    "signer": "0x64CEF429BfbDDcA7ba32782942285bb8feDa2Fd9",
    "userId": "97368722"
  }
}