{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa5410413d193ba7a539842bfd2882006300aa19fe017b6ff653cfc8cb1809d92",
    "signature": "0x972173d45b8e5f807b04bda0399ae0d5ab6a80081f37ecb1d663ce48ea1cb6231e902f69b2f4c7ee07053bd67878eb30bc5e247d56ada984d6db0ce31c77dae71b",
    "signer": "0x4ec0618BF74aDf72181673DDa518f0bf7781DE7E",
    "userId": "703354792"
  }
}