{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617203042",
    "entityType": "User",
    "nonce": "0x5aceba01eeae8a40bc68bcddd23e39cef0e504e905bb1befe179235049217257",
    "signature": "0xb78b928619e6aba0dd80177174519c0ec9d6374ff6a992e24987b50312fb20185abfb20e59503f9188e477a6bafad81647bdb24032239487fe7efc38cff596681b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}