{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139298",
    "entityType": "User",
    "nonce": "0x23ab3aca5c7b8c0945d7c7b30687dd091dfea73d25e8ef328f0dedc53bc06e9b",
    "signature": "0x7bd5da59401f6f9aabf807d73ad24944c1652fc36030db844cfa09446ea1ecd72326fe5422eaf37625535ef2538c646509d3cbcd1c3a466d11393280680d0a9d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}