{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a794571276088ed34b0ee9043f4992e52b0773921bae68421ac22051aabc343",
    "signature": "0x1d4a3d012834c27f1ae664d80774b8c112baf1d84d82ba8c94eb16e7eea0158112d18f45fad867918456ee254cae2e331ce7afafd78e6824fdcd0cf91df767521b",
    "signer": "0xDf1e914B8E94A1D23ca7c7c7BDc1d4967ADeB906",
    "userId": "409939897"
  }
}