{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "747698764",
    "entityType": "User",
    "nonce": "0x2ad9a19cf007c599fa3582015950f87053b4ce22661cd826d233338851c71e55",
    "signature": "0x3ba9b0b3f02902221f3d9430ea1c4212f078f560a117cc694f674dad007710a232f2b8bb0a2b38d7004cad01fed42bc5e798303f15bd94e706a909af544b1e121c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}