{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "315121",
    "entityType": "User",
    "nonce": "0x724c90c51fab881f2240c49bc6f38d6bc4ee1f5dbfe52008a8e2d70234f566a5",
    "signature": "0xb127ce7ebe41c19f2ca7512b32c133c2ff8ab4cc6213276235e7f7ab89d2f70102a6595cb968e312537735fa57119e7cc2aaf18b37d3b954009401371edce9281b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}