{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "463741311",
    "entityType": "User",
    "nonce": "0xa29ea39d6cb21bbc5c9b2bce2bbc8bc31c0649a9ead7d39af8c7097fa0737439",
    "signature": "0x0aa10cbe9e166404cc518f4de61668b5093a51ffd77ead000f0ebd736fd91e9d3e64379f7af6a4c79675bcc221aa82c194499aed93ebf47388555a664d323bd71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}