{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299882",
    "entityType": "User",
    "nonce": "0x6aea313fa32c37d04cd8e8457c9ee5d13169c3c067498c982e4b660819180e4c",
    "signature": "0xfc8e2d48189ff5c9e31c3a265b3f6cb70d72c60edaa8dff8f360e3a2bf39ffd666ce25efe5041b56bbd6ebb7b5b0681fbe83ea1e87f7ed4d47a9edcbcdbc22781b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}