{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xc87668888e6d4aa851840e7b64414b41a6b1b7decbae89e7962a8bd747585329",
    "signature": "0x0b001f903509235a603d215b83f49f0c7d4615b30222e70666beec0299580f5b02d30090a2909b948a94f4b69411ed51b2f56b018a0c40634afa43d551f256eb1b",
    "signer": "0x99184440Ee6a129090E49a1c231270aBC49a9427",
    "userId": "21285244"
  }
}