{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0x503dbe0e2a35d14fdb35a57f2816ce2b3bc3587354ad94e7c018bf0ca1e2dd1e",
    "signature": "0x7798edae62edc74c1aa68a1feaaa11b7d0d3bb58ac59f0b2e1d0b5cbf4b627612245f8c3ff9d9b51f4f30ae69aeba28ef0aab91370fabcdff21566152d6eae2b1c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}