{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74263",
    "entityType": "User",
    "nonce": "0x638dfc3e37efedfad81991bfc8a260d694c570c9d522fc52782bfa755b12c56c",
    "signature": "0x461bc70ad32436f989894f1e33bea0c9967c052d0039d7ec3cf15b274aa13654733c73f1ca3a1df2bd4532eb4c39d093f8b23fced96eeaa7bbe78c31a50ac0031b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}