{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "513584296",
    "entityType": "User",
    "nonce": "0xd7b6f56a7d233f47d6c47cccf5619f0d319f4b055c97ab7ec45b2456dd22df71",
    "signature": "0x50aa6dc1d0c3c38a09e05d3e8d045071b021e542ca8a2475de6121392605cb0075279bdf6eadc25b78ae5b29ef7a6fc9fe0337b1d66a2a2c2e5777b45628762b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}