{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ef0b29985a5231b4b0bd77ef8b0d0f144c84e97153e708967463c75f0d63dce",
    "signature": "0x3f0bdefacd53011e0c2e0a58867dc1ca32bd52b4133aa2924f566951bd4ddb7c561adb63535353dbb9708de4862dad5d7f1d6dc8264a9e58a8ac1016b475ec9a1c",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}