{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf24ddc325da1e70db05c4e1fdc1ee6a6c988ca1016fa20d0895c51045199417a",
    "signature": "0x4c81e39b3fca84233b956ea82ae2a68d879a8ef99151f34ef5468f91e3b2cd6310730a32571a54c6d2ed665b78b6b239a89a0bd4e61c8eee84a3d3b1a27370c31c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}