{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0xaa9cac9a94c7b2df6ccf0d317adf788b762ec7c58f800f53104c0537a3c18ab3",
    "signature": "0x9d30f30ae28a0edcc62c39fcf7ffeacd72d79a9fd0e39772c4faf07f43e80cc138eea3e912f438210d078365e874e9319d314574650047567086a4b2a5a8e67a1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}