{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x8f92f8780149e5cece805b10b8c67893091da726f62396294f46a24b57fb61c7",
    "signature": "0xb1c04ee8059aa2a4877000c7c0496aa3b9c8fe7630bcba445411792c984ac031694ef85014478c98775f80b614c32f5cbeb5b34d2650f8f5125b57b7157d9bae1c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}