{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904709618",
    "entityType": "User",
    "nonce": "0xd14802b506da979eca94fe8f0c825b0fdedf7d212dffbc07242bf6237002d224",
    "signature": "0x99e46d025077a7f9ab18f773ebe9062b29dac32a8a5a2c75bb25e35bc737f54c0a5b3d261acf63ffa89d6e0f4ec7089f3ba49fd9c1f600fe61db01ecb8a4468a1c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}