{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04eca52e670fbdc7cffc4b3d4736797a726ea59757c7d1562c4978c2a40b937c",
    "signature": "0x9a4d7e191c2b083361a077afdeb4819a5d126e7ef08e502a54dc29cbc882311d14ef02203d4bcb09f86f9dd4c3a840eb7cc08bcce01d2a6de7ab88eaf344860f1b",
    "signer": "0xb483ED183e7fa8d24DA348Fd617B6e3467ee2A9e",
    "userId": "623898319"
  }
}