{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3aee37eb2b633093e9e8c98efbf6733387a5b603676ae43541980d824459fae7",
    "signature": "0x5767fc98bb1efd13d326a928c71a27975b8056a31a8a5243b1f1cabaff4bc59d51a690f40e8a0ad154ed0fdbd5eefb8a494c23545c255f4df76e0cc30f1e69a51b",
    "signer": "0x123DD49C14e579973Db922Dc349f4dCcA8246C2d",
    "userId": "107488362"
  }
}