{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645942",
    "entityType": "User",
    "nonce": "0x756fe9e80829991b4699f5e1ec1166d0d49caee486d62db416aec7cbcd0767de",
    "signature": "0x66d16ca9fd1b96269be315765ca6f914b0580db14b61b98906703534b901faca37aca830cd12e483f7d699cfdcadfc1af7ab9faf01be23c67e630b6f10ab1a1c1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}