{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394383",
    "entityType": "User",
    "nonce": "0xde2cd536be482eb61fc90b23f3fd30cd4902b012f42666b1247a05143976a9ed",
    "signature": "0x408e2d0c7ca7a9187c14223028368f0c954b5ee739f46570528c0960c7b779965fac06a38dcb02164666ebf8182ec6edf2f5b8427f44451e8f4bd1de58c368d41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}