{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1429398",
    "entityType": "User",
    "nonce": "0xca7f2433600a0618e2e3c21b1e830497b4b4a8813286092c284d3b3c293e662d",
    "signature": "0x2988fe7655b61d23c4c5c97075f6acf1d5ad9fd7a599662c9e718bf00b9f3ee47f565777dfb55f66633ee8f76ff38846b37ffa9f82c290e97ba9ab093fd10a321b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}