{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310089",
    "entityType": "User",
    "nonce": "0xc17ca6da1f2e9638b0a7358cd71c0cc1a093c1102bb26cc092e00b1a7a8361c3",
    "signature": "0x4b57677c5bb98090ffd9442a8b6f6833b8d55f896a48d4849a695e47df71ebda621884933d8cbc620d98b3fd137f37e389389f7328b03b39bc7318228fe2af491c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}