{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735402",
    "entityType": "User",
    "nonce": "0x1d22430061f65676fc23591e1096c41d974929d77214a2d9913f4a8a14fb8f81",
    "signature": "0x4531369c3f9fad23d88b86798fb5ec89711b74f78b6f4c1de13768198a32404820548070150abbf5178e12c5ec05601d667c80ebceb863727cc2faad3d505e7b1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}