{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72975",
    "entityType": "User",
    "nonce": "0x9146dbafa4335891f4982205f9a55f22f3c238c601b39eea82d8461c2a09ebea",
    "signature": "0xf2bfb35b6571138885ee46309df64b91a04f878bb28ffac05ac5cae1d2dff1246816351c6964c51abf733e34016706d5f7bbd488ab57584af10f9e27b0fe01a91b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}