{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0x2f9a292cacc4ef9c4e4d399f91b6ae352d9042463c6d32d474d8ba2334e6ec83",
    "signature": "0xf9d42f22e90900c03f9ae553e554e21ec5c00221da6e2f6c4a2e24cb6f5e3d441d64938ee3d366b47b3d5ac5c5b4e7c36145f0edc7be97cc248a1402bad3b5731c",
    "signer": "0x96339e3C19861DFc37C9670Da1cF2d718efF3FF9",
    "userId": "126262"
  }
}