{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0xc36599194e13bffd5cd168fef07f3779015754ed6d395e764bbbfbb08464974b",
    "signature": "0x1035004aadc6623c7704d0286d7a0a66b6511dbb2c8eacf4c2b4d7f206de857575047e3edca4882fb65f188a0fd3532483a9a820ea4ae5bed9fc628d796cc50d1c",
    "signer": "0x67E321241D4e44e5aB5D1c365505f0F33044C7BE",
    "userId": "460631539"
  }
}