{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd20de8c89995b487a2e45dcab26db0631c0abdfbd07a0f6de3e67e17cba33749",
    "signature": "0x45d5d86880ee57b0945bf6541fa80b91679b3e8a5a5730cce360a24345ac734d5aee14680f9b3037efd1a8bc5c1fb0946ab2dbd14b5e4ffab223e55107df4d471b",
    "signer": "0xd47548d941A8FcDD85991E799812d080a4332D69",
    "userId": "802018086"
  }
}