{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xa0d4895a6488db454ffcee9bbcbfba113f2f7ce0d704e9354d6964e84b88ec43",
    "signature": "0x77c1b12f8fca51d91f3514f6e9d30f2d1ca692f037a496a9cdcaf8249cc3fe3e68212f2a5a7c88f0b84d1113f6974bf328b40b123dfee0d6808e36c2da9fbe6a1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}