{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc3c7ddd5258befb4fa613f65ecf19204c63af8790cef315d0edb238be5ba52db",
    "signature": "0xcf453a5eeddb51967967ac4a1587bb1a8b548edd0fd5bd7314eaa9beef00ed53607120b5afe19db3de3954a063765a2f803f34c465dccfd3b7dafeff6518d8ce1c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}