{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8fbea1beeaf0aee3d63effb3675b7e6214cadcc8bd39f737725e84d83860ca4a",
    "signature": "0x95bfbfacea6079d4ca2c08a3254a6b7680cf4459282a5aef3459ae23d415420d64734ffe9a4c54c1acf843e9bafe86fc32ffd1d45569dca7f918c8855492369a1b",
    "signer": "0x651B61300cc750c67eAFaCdD6eC7968007A19bfD",
    "userId": "759471149"
  }
}