{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x476d6013a66e43ae94f6f9579c62fe7b03cb2d79359024e13bb98da082cbb071",
    "signature": "0xa8fce689ecb3524d995850e2148371cd3e54795927a311ea977709f89b41578f70cb6a34c7c1cf97daff1d345520192ca9f7fb6aa419fc4c3f7bb995776786281c",
    "signer": "0x606B9dD2CAdFd5EeB1Ca78C6ce4538ED4e7Df7E9",
    "userId": "54633718"
  }
}