{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbacec12542a04a6f12f8d5892b3749eaf12bb58c98d39f26e93767e4e8d7772a",
    "signature": "0x3db3e7c60303f596681bda4f09eb9dcc50148c243a3cf25e3e81790412954b4e484373ec9f41d9dea452a3260462f64e25407db946bea2e0b4c8018877c51a3b1c",
    "signer": "0x1cE2F33DB2a0c4041F19df291fEb25aac4c02e5A",
    "userId": "1870913"
  }
}