{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0c5662d2a46239186d839f5391b906ff21c782753ee65c6c5e3dbb2c069a39f",
    "signature": "0x502c9d498d2603706a85dc0868b100ba9a1dde37d30c0b28e27013ad58ac03dc24954016b8cbc1aad25b9a8b0d385e4d9fa9269d522770d22e6e867a329006841c",
    "signer": "0x5dE1751F7A5263BB9C90975A86D56F0087019953",
    "userId": "12559986"
  }
}