{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f7c3bf28a19ca0f2a86ee49c96ede309e6eb8c241bc255a3dad1989976f0bee",
    "signature": "0x978758e0fa1aaa8b0ffdb85cc96d1fc2f91fd8f12e71c840aad5660d59daf1da2b4017545b000a504241003b5acbc70d5c5ba77cbbb65c7437167cd9055ece301c",
    "signer": "0x77Ffa0170C405507aF97CeF807Cf57d7471dF570",
    "userId": "902749925"
  }
}