{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5aa17e7abcfac1b6e118901f0639eb276b2ba38c51dd4d07f0accb1aa3c88ecf",
    "signature": "0x278faf47a282eb3fbe10b096a414c6e8df41808015de7ea0f38dcb75c64403c27fb31bcd62beb8ef7e51b445dde58181d158f1c354c08c5feacf9f35f566aaa01c",
    "signer": "0xA5E9de07041a020F8aCC648d53FC5286b51E9C9B",
    "userId": "649099946"
  }
}