{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511276",
    "entityType": "User",
    "nonce": "0x37b3be21d279f32581a2b83f79d5913e6ccdbd2c6406bb4dbfe299302b2ddc65",
    "signature": "0x8edd462aca736f589f2fc967886be2e1b2236ba5fff56e4c6abc940af28ef4fa3de89f3f542738b6ba3032874b5a3b92fbc7a9cd771c49e41581568c2a20a13a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}