{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216638",
    "entityType": "User",
    "nonce": "0x9d9063c65e5d9d125bd20fc0dc92fcb422327d949ee909bfd8f39aecb4a66b9a",
    "signature": "0xa9cf6061a1ce17f64177fab80fe31d9a147da556638ac5472c68f4355f55243f5ee4d47e333e6e3a6c9d2a514e075d91ff404ab5e652a2353564a8b9205dc79f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}