{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43170e05c20974cd0fc204260430f7582c247e10a7e7f600434aad534ef6bf58",
    "signature": "0xe286789b15805f142cf7c4ab5636405fd2f51b23b122c0202656de163edca0dd35bc72d5d610c8806428f89c066d89bf4e299d79f5519a212b7e5480f911705e1c",
    "signer": "0x582624A637044A765770A1401561DDFE7a927459",
    "userId": "840700709"
  }
}