{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0x6d780fd18083497601aa5ef85cac22aeff5be224f622393f1b3eac5ff9547a94",
    "signature": "0x0231c63a570a54204d2103823d5e5684c628b10c2312599025a34d34f7df06940ad701853cae62f94dc3e984c7c7ec3bcc8f377f421c642c131f35c31ca785741c",
    "signer": "0x784332c3dE17476612Bb5A8F70d9E1F103780C3F",
    "userId": "577744761"
  }
}