{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0xa8cf91ef0d3c6d42902107e29dadf3b60d1d5eda3d11b5db6c81584e6af5b4c0",
    "signature": "0x28b4394b382a75d730d2258ec6b943bc6924ab473a61c5f7e3bdc8f7548f800a605827e63885744696ba4f008f9e74f7a476c82b5ee219f2fdd3423f82a134961c",
    "signer": "0xf0F491bE628c3A5BF3904d1Ae68bc59234407951",
    "userId": "560417026"
  }
}