{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54812",
    "entityType": "User",
    "nonce": "0x4df517afd8db6cbd9fc57794ce5c3ab2516c4cfc73eb6a3b554bc7b419359c7d",
    "signature": "0x30b17a4bf4e637ff61804dc12f1da17944e9e8ae55c55d4335662cf79b03df3968a946be60244d10520e56a01861d2d80022bfbf03717c456e5760dcacb897b31b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}