{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf07f61874cf6e0c3c2df015306eb63dc75b5aeee547bf62704d2003eedfaecf9",
    "signature": "0x5895bdd4494e7670994cb26ba81478b9f438387d644000dda0520340137941d46f5ccdf3ec2d1ee934ed69494447a343233b80c074e749037df170ee54af5f5e1b",
    "signer": "0x6B9519cF48DB3f140784848EF3Bd17E4CAfA71C6",
    "userId": "868140613"
  }
}