{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x846b09c8e8655e371db1c5c0cf9498a997bd5641b7c4d85f95dd34328ae29994",
    "signature": "0x0723ce0dec83bdaf3c14c61f0bab8e407358ca13f8c9851b3b3e7602c791618b1ef703801d1cc6322477632ba9f903f5214e16d0ae3b744fda5a2538b76691ac1c",
    "signer": "0xB2F4d9Bd1afdd46f3A80487728e10205A8031eCC",
    "userId": "197529759"
  }
}