{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x567de8c1477fd60885fa3388b803ac2065a3653f5c7f628826c2aa212ef981c9",
    "signature": "0x105eb9288b05b436f4c7b4188eaf52f183ce22faa03e415b36784d9ef525c62b3b9de48525f9f473b9883dd45b9cb390ec8ad2a6e5db578a7e5b86ad8714b8471b",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}