{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683603239",
    "entityType": "User",
    "nonce": "0x94b0366a9b5333afa45b8ed6e0890657fb816a38a67aaf3f63cd8d409f04b2a1",
    "signature": "0x025e59102c56abcef756929868c2a8a11d3b373666bc3ce6513ebe0794b125094fa93a472530d000f01b24022d402ba4543fa4cb021620e25a57dcae0fae17381c",
    "signer": "0xd72900E031d6C9829fe9C1950eF6FC0D34C60F0F",
    "userId": "396396820"
  }
}