{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8940",
    "entityType": "User",
    "nonce": "0x419aba4e8fdd821c31fb9e21664803004bce8f1eca950e78578bd952cf2b7f49",
    "signature": "0x33e5a3864523f9eb66db9462b152ab4d81398e87d0f22b9fe8eef6ba6cca9fcf688e1a330819e2638bd5c4449d00aa880020ef782164dd2d98d7e7a92ffc7ddc1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}