{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387922",
    "entityType": "User",
    "nonce": "0xd9775ea8429b4f010d297f094b38c2dfc35aa8f86846ee8f33a0dc86f17c9904",
    "signature": "0xe1997ebcdc42685bfa873c11feb3601b6e173d8739c65132625e54c1734ec20a125e8836120e2190ebd27d2c1d846757fe55496d9cfd68d774f0fb397f15839d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}