{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x60e9ea97e9ce96e32104cb13b0e03901492c072f1778538e83e629dd5eba3341",
    "signature": "0x2851d843baaeae8fa4b31f949fdfe99aed41953e6daece6b7b8bacd3c2923a2045b67d12ac6efe1fb7e54e90910b5896f001d903bf65f7b51058d60e0a9c49b31b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}