{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437224383",
    "entityType": "User",
    "nonce": "0xa0c234df6cf3de93d9f321155e7a76dd4c587fb1647ce90cd210849a5541ef76",
    "signature": "0xdf9008ae7e09149160ccf594c1b39bc96bcc8ce6f09464ef1775ae4ce9b7e4233891fc1b498d0c2eaab0651d4568ec16cdc848ece93b7b0c28d69241b26741b51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}