{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaffa9d5b7328c7fbc3caebfafffb3a83e8d55bcadf6b6e1b3d7448321e7c8ab8",
    "signature": "0x5b5af97276d576beb36bb9f55989ae19cd53df60700f9aa72d6e7558f0458b580dc55465a8f248ebfda5e21f3f4b9684c029ee326a6c10f018712c4143c0f17f1b",
    "signer": "0x92e0A690bEb990ea3E8e361Dd326c12E9384d0A6",
    "userId": "725714600"
  }
}