{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "884161908",
    "entityType": "User",
    "nonce": "0xb435f21b679d29de03fc577374de462a1eab9f9d52cbf49967355dffed2f0502",
    "signature": "0x9d74ff0a62e8e41e1ddd71cf0a060176e05b8ade835f2c2d7c85f9bef08dfb01262a94070e591da7715d8e44ecc4c29f69beec3e23a2aaca9b6dafebe008fc9a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}