{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "419046316",
    "entityType": "User",
    "nonce": "0xb9ca2f87c9096c372df72be01c73d796766bb8304790d13c9e98cd6d5efc27e3",
    "signature": "0x2a1af5e6e66e2d4e54656ab5acf63644fbfb5dc2f321504b2a7e0602cee66bd5603586dec4c427f4ad2846a7d03d9d30b2600e4d7009778d7de1e49b75c89a741c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}