{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1521632",
    "entityType": "User",
    "nonce": "0xe3b3b5f684085744ca327f0896b60ed09dcf29ec8169c6e2b90e764aad98efa0",
    "signature": "0x664d73d100dea8bc60d9d791b8a98a7af7ccef35d1377bb91cf4cabf1b423ebb64ebf3cf6ccbcc7944562fd5e85ee8aa4e701311dd11935ade3696f27dedf6b41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}