{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63702eb8ac7fede70256a99d7b95c07b54a5abf24d2224b2eb09c7ae803ccdcc",
    "signature": "0x1b80bd7e0226db8770dc686ffb9dbfbfa383e41e3010c53d54b57e71380a7cd3028b091f4fe15fd1946754bad672ee4d5865fe8a9bfc66a399b9b22a0c1425951c",
    "signer": "0x8C8cd53F457a94deD3998A6853eb774C2297998D",
    "userId": "251301438"
  }
}