{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391938",
    "entityType": "User",
    "nonce": "0xb5f45e5d1041a616da7e45de251e4f4834d91501ce9232143cf551d28589f96b",
    "signature": "0x6f881b04ff73d4fd8f5754778ca61ffb351b5847882e9db2dddc73d1424dd75b41697131f4aa11183a2df022ce0f21739fdea4ac94d15d730b162252f7de0c931b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}