{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108724",
    "entityType": "User",
    "nonce": "0x08341a04e4166fe515aef189a5691caada231d5777756af25a33a0ad4c97b6f9",
    "signature": "0x7c4e51f3808d59ab687c1b537871eca665c56a7fdbdcf22fe0e0c255b1008479493d74c11e5a636da59f9e8c94057299e09266bcc3a51f5da70f98899485b89d1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}