{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fd143eeab2adfbe68e6f632a5a198e3e75f57df2ffc445d4331656b263c350c",
    "signature": "0x93f089e9aa880750c4017ca1cdb409412ed8be4b81704b90368a91234f05f625421c5039bad690f44e7bec7071e517a904221809b7e1704786d2d7272872629a1b",
    "signer": "0x2D95ae7B07b469FC2B440245F94936100bac734F",
    "userId": "814776560"
  }
}