{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x40a46ec084d57d20a74d6b5c13885e088c3220c48a77a1b2b8b4f72420c671a8",
    "signature": "0x87a575bad2d8bc7b0990650f15c1d20996cf9b7ae1d21495fbc85660720b561270794adc3b52edd0e67b320008c75819d70a0c1fb72d9a0f26fa9f9a8ffc52181c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}