{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "814721941",
    "entityType": "User",
    "nonce": "0x3ca0080f44474f5f1ca118c1ba09758a104787de17f1113bf666d8798f46ea38",
    "signature": "0x7a4f0f72d199dd23488df41c39eaf4f7ea79329b2ec3039aaeae12e744e6477c664fdd60071c25b98282940ce5f119ac51c3f09a04dc5d02b4a8c62e7d7171fd1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}