{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8bddd0c6d4c228b696144691f1134357db042109f3f4033cdf5de38f5b9190da",
    "signature": "0x93be7d72a7ec105a8d2d95f6e8bbaa1a2c0bf072b1e6c8dc10b6cd7919a56ebf0c955a4b709873dbc2040e286464cac7e9877ca9dc5d33284336f8e080e96a771b",
    "signer": "0x498CfcCbEa9a4C4f3B2CF20371c2F964e54b7aE4",
    "userId": "708784155"
  }
}