{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93fd7883f142e2e9d428b01359b88b950e2ab72d705c030e23d438cd10dda60c",
    "signature": "0x9b27047f1ae750c5af3f4a0194e91dfba2c59d4d3fb0db9c781b4435767f3c4a0ed0f123d9a3bf33a68fe478724bd44c72ddbd542876afc037bc0f1eef9a8b511c",
    "signer": "0x1CA73A838CfC398A778B038c5889EEC3329093e7",
    "userId": "469555089"
  }
}