{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9780",
    "entityType": "User",
    "nonce": "0x861f86c1778570618ff396770e9e2efe1f8ae0259a323c9a86d8e4268b541c3d",
    "signature": "0x5f215ef81e8c803262759a11ea4220b3da24aaadb5ef9c2041cf43980f1eff1946c4207b08e0c6493a9cee8bf285ebeeb42a03ccdea9329b8c2b0b76497fe82f1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}