{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63972",
    "entityType": "User",
    "nonce": "0x433316741b9c13cd4053f0527b42400d893fdbbcb0fb24fc4a04df01f28211b6",
    "signature": "0x5aa307e2351d62dbfcaded1c60b66529e1f9a36cc3a77b663cd4329937acb9152f62c49ba1b37962d9ff8868f112027c84bc988be717362de9db5fce1625d0611c",
    "signer": "0x4DDFbEaa043fd01159dec9e4889Da45617A33C41",
    "userId": "457415399"
  }
}