{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400535933",
    "entityType": "User",
    "nonce": "0x8eb95275534f5a9f7a0fc223d76245cc6d3dcc0f2dd1a21fa9f362edf1b37ceb",
    "signature": "0x04602f10ace58fc8924d9a8b096c3bd8a88380739080fe8e9349194b41ab79e160ca6c43c58eee9d61e013bb035ca8d11b368cf2f27e2464dbaca2a24fe048b61c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}