{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897648338",
    "entityType": "User",
    "nonce": "0x50c338edb09a276eb4d7ebc05d4a0b47872011f9babbfda1d671e2c5a10e91dd",
    "signature": "0x20bb5cb77f81b0249373566d8ae8d0c64fe42218a681e6f89ed2240ea496ef9e5caf7837ab67f15a17d6840d89e14fca47413b5d4bfa4b7530ee3205c279f69a1b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}