{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xae3b0249517f68d0277215e7333f5401a2704ebc8d4edd4121ddd62c5c7456df",
    "signature": "0x618bd05ac73a7136ac9990180863b73224357a94909f8000414bf152b7e231cb007b3b74a2bca745862f6393feda2de449f5759541e907be513753a4fc6ac5ce1b",
    "signer": "0x5402C4b9d190Bb11bA99Ef659Ff5E2eB4E6a6552",
    "userId": "310214054"
  }
}