{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51243",
    "entityType": "User",
    "nonce": "0xb15d0592f0c109ce10713dbf6085b6809e2890c7ceb4ac5d2f5ea4f80db090ea",
    "signature": "0x21ea636fcd5c5422ed61eada1ed67155cbe011cea5bdcc9b52940dd8f704b73c792e5a90d132473fe37430f7551fd0788c655aca35d78dd5ff26649ac4aa1d7e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}