{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x387afe329e3ad75a0038ff35023e4de918faba0053f4b01c40f2e74c824eb9f5",
    "signature": "0x2d4d7737c3df8fb8495fd796bba0a327c6cfd9bdf42a7bf8fd15cb300fe3ddb535f0efcc1be02c42dc6e3694d60b2a37c0f8e07b79d488812e1551acb36683b31b",
    "signer": "0x8d2a32737cceB6eec8e74b5A45b42eF2da1366a3",
    "userId": "750127834"
  }
}