{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d3619e8383fc5240a7113cb2e9121a98ccbffaa2d85a331d569a87fe12998a9",
    "signature": "0xa762d125a72db15f7ddcc674817c2696a597fe2f1ce5ab41fb96b02764f1b50e3e3bd22a237d97262535f47823e13240144ebca2e93e71455379c5b5230a89381b",
    "signer": "0xcE73e224c621A8c9b24AD49f2bA1C694AE573fA6",
    "userId": "816829631"
  }
}