{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398267373",
    "entityType": "User",
    "nonce": "0x165cac1ce797474dfb48058c22b0ac4615ca972c8937ec354eb8100f8c3987eb",
    "signature": "0x79c6a6c12357fde776919cfca967cf5a285a3534116e0027aeba6d16042530ab0fd0215fad488072be252027bbd223168fecfc8a400044491a12654d1616296e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}