{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x22bfe5059fc31feb456d3cf1dbd9104128bb7111fbcf22d2fbde1620cab2a86a",
    "signature": "0xcfaa5b058ef65555f064bd8c81969b078f5a96f2b61639be2b54921f43888c5c3604ce8e3aafa8bd8ebb3ecc6f887f67d0d27a1f2b25cfc048b4a9f92ff2de9a1c",
    "signer": "0x7D991945CC4bCA9A06074D7026a35DFCDc160A09",
    "userId": "566964146"
  }
}