{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "483873579",
    "entityType": "User",
    "nonce": "0x507881683b33b443d02a78fb64c55c647f5028d44205a23d4f5ab88de5ce1c54",
    "signature": "0xef5684593ba7f375927627127a8b53c0bf5ebcef4c533df1784f414c7c0aeeb701c925779b599bb8d6a53a6c68093d299336771a0a664bee4f545e4135c997e81b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}