{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174508",
    "entityType": "User",
    "nonce": "0xe54149b06cb1abe6d04589090d6341d0de11372a949389dddc4e37ef4c934737",
    "signature": "0xa0bee1bbde8679b207ff7b70e19f4c8630e52f8bd23d599de18f359b445bb8055491e411b08899ab5143a571e7da6e1a484b589a55d4ad75759e5d9fd6154fea1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}