{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "541902905",
    "entityType": "User",
    "nonce": "0x550f0271dfc340f3b1fa49049cc2faff0c0f115ba5950196c62410bd94a64996",
    "signature": "0x4e58ad17b184a4b5c12423c71b83a1d596ec5830a4d7649ba4e1e53f70103a0e3a93e59421082a69838f93364f419ebf28a189b167ba34a9361709248173fd7b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}