{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e71eccaa37f54588a1c7c76f2d6a90cd8f9985e3896b79a2517b5605541323b",
    "signature": "0x5b715ac9c8fe8277bfe4ce84c4d823f914f415cd9ca925dbda9c3db472cac51b08566cf08d9d8c408f7d9d59508573e9b3fef04899e1453caae5856406177f0f1c",
    "signer": "0x56CF87777DbbEec3ab25561566CB34eE2f5C74Bf",
    "userId": "94019576"
  }
}