{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336049",
    "entityType": "User",
    "nonce": "0x3284a224ad90573ebd30f6f637089fbb2fc1ce1f90bf1d42e6b3c4c9ca7d6be0",
    "signature": "0x53a278ae7b95c6098fde2ec937e6e57a61b6b7304ca0a382a717056f40c1825d7f2857f60ec8dc3b911086cfcb1df6e03fbe0b83a5ed322990af868ab220a36c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}