{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355715",
    "entityType": "User",
    "nonce": "0x01e9e9cba1e779ade336bc9c28081382d9a5f771bf41e2a1fd1bebf8725deef9",
    "signature": "0xe39250cdd40f3514bdfdc8556a92b2bf3c2b35a10af5b7a3ecb069a4d25e8ca556a7e6e01ae589b387a4a0c0501b8e63850ee4205988ad88c4bb94394981699c1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}