{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1493333",
    "entityType": "User",
    "nonce": "0x18c5cba215cb9bbd1e8b59c137e0d35f5bef1c7e61ab9f0230a9c22bbb1e52d4",
    "signature": "0xbcf64cbd57b4aebe9546687d0d05c11769c26aff2dd787033c50c1093a138a141673ada36db3d94d1987efa99aad403d1be5311bcc8d65592ac6f2a52643ecd21b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}