{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102551",
    "entityType": "User",
    "nonce": "0x499aacb11976f9251d734b42f59c3b8aab398a7f69a83ffa7a69964b2ff0523f",
    "signature": "0x12ead98ddbc0551bc1fab4113f55a8568c7d2f24a65dc9c08843a9cc56fd4b5c4d64736a8eb206c79fb9cc61c959141bd6a209bbb40d551c400bab2af8a3d9381c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}