{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbb299188fd3151527a85473e61babd10adadb6bb01090ae37066ec3c8c6471a6",
    "signature": "0x015029a7dfcbed7fe3b3300be8c86b96acb7e748872619e8a348a100c6a16f682d039e16cb97372120280b6ff43877259c1d8410e7a1b8c9905f10b82f1295b81b",
    "signer": "0x4379915D6BBCba4E61e1174A11BB24041aF0cb52",
    "userId": "583500920"
  }
}