{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595543989",
    "entityType": "User",
    "nonce": "0x870ba6113bbc89e8b23a4864446dc452dec416a6b654368fef25f6389148567b",
    "signature": "0xf22412132461ce4135f046d3590e150d0df2d70829f15fb2d0d26ed9bdf0ca297c8407b47deab2a5baf2ae7ac5038368d5c9799cc1a6de57170fcf7a2942ac691c",
    "signer": "0x644fF4B4D4582FA06F98090ee11a884870093ACA",
    "userId": "575648795"
  }
}