{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53432",
    "entityType": "User",
    "nonce": "0x344057e6bed0dea1351d88951eca39c3d61dc5b2b42a83344904b8b87dd9403f",
    "signature": "0x6466eaf51e75cdeca591035b1d75ddd46a4fafcf9d62733f94bdbe48dd023f0f6bb30d5d20bc7c3964eeb7cbfa61fd99a57b9b042cbde1f75d3ea051f2c3fc361b",
    "signer": "0xecd2908757D29dF088bd436A689baDeb4c915d34",
    "userId": "463878785"
  }
}