{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28407",
    "entityType": "User",
    "nonce": "0x7f2932b83fed7c1a2c67e2ad10f6cccbe7830758ab8d27ba61dbc1510500a6df",
    "signature": "0x4220ecd34df5f4453c976d33c5e4e3f59539057a8979c07373be13617016cb8b70c4572d3a4658af37d7ad889646af9124be1a6863897aeb53b9c07505b87d931c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}