{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x69ebe38fbeb62ace55538a4bbdd7ea85348c6e7214bbb0a3ddd84049a13979b5",
    "signature": "0x9f7262d59a12a8e924bcf4b45a4d2358edb79c3e55a0113751003929a6a49c4a18790c77624216e269e48ad49267b5216bd316496d7084d1a499712740ab14811b",
    "signer": "0xc978e9D01005C9E552BE722797808DeC105cc59D",
    "userId": "62219567"
  }
}