{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13321",
    "entityType": "User",
    "nonce": "0xe102803c4b1a56c6607d59d529b078140400cc170421f8e1ea4ad27d32e810ca",
    "signature": "0x3db4a86251fa496696cd192a2fc3b095160d2d338dcd10850aeaa44af047d9404e9863e3f3e515b34734fef1686508dff3d08b9420f5fbe9dcc336260d5feabc1b",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}