{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0x1864e12c7a4cd3ea665086d78e7d0dd2a4c4be9505e395ca67066333a80f1217",
    "signature": "0xf262269ffc74895054fc6e196ebfaba4dfd8d8c85486c024f2ca93e2be30cd3b1930dd4f4841989235190b4f0e69c91fb22bfa4f88d07564f8105a4b9467dbac1b",
    "signer": "0xbC21900d8f88d750CAcF48dB76bE331d4b454f0a",
    "userId": "161995802"
  }
}