{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194819663",
    "entityType": "User",
    "nonce": "0xc3f8920a414dc073d6ce2908d9d580d34f657252a0efac9ab3dd1d6153c09387",
    "signature": "0x7864352d70662cec6f99736199cc4bae8d8a3da3cb829037ff9d6aa1fe6c54e77c3c8c84a22bcfa822df2d6f593bcdfb804533b2b68fb354eca220eae4737a411c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}