{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543708224",
    "entityType": "User",
    "nonce": "0x062dcbbd0c5edf0e079c6b7afcb0e4c6092b5d1c5439ee6131a1782352f6cf45",
    "signature": "0x6d773b7f862f83208f38843289a09b916f8ae37c02fbaf1d5958a0a713fdcf990a352f8cce1178cc99e8b15a27d926ff18e20f1b56c32f76b5d8ed2f42a1b4601c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}