{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645669464",
    "entityType": "User",
    "nonce": "0xad88601a2d2eb1f31323a12b18ee08b6b14dfd2629a9c8132bcd4700a5973bad",
    "signature": "0xaa555064ebaccaa2cd08a0a77092a84158a69434352593762da6d29b46ece3c049b298a87e566bb0cb3cc64d81f985e59dcea0dd6685c97e6decf2e1641281a11c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}