{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781841071",
    "entityType": "User",
    "nonce": "0x9323e1a823927db4e5bb911924e2c84536e4ec5113e6b47a296f75a7a9007d65",
    "signature": "0xf46645e1f05d38e8cf3b5f73388c61108749a94eab3d18e7c6994afa360a10fd3a9c5f44cb01f3e290bf7cea567dd9eab7e51bdc24b667ee1786088e972851b21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}