{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0a0502160ca1809e00dac8b6a6203f140f134cd71607cd114ec095b55c806d3",
    "signature": "0x94048f56d704f1f468048493b854abc66437d8e69ea19c27bb301c6ac905bc5b507a5b9c161de710ca5d038102e1212b874d51dccf0869e8116cb218cc4c47801c",
    "signer": "0x1fe2af59c615c0c111509b8255F966Af4312da41",
    "userId": "788000444"
  }
}