{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735980234",
    "entityType": "User",
    "nonce": "0xed373388a7f00a0d2c4f74b727b83d5416ce7bdde305181d627836bbc19bc98a",
    "signature": "0x171b3a07970940964f75580b96dfe23e0023586b4a9e5e44a8f0b2925c2fb5f975023887d25cbf93e3ab85e145fceb424edf11fa8487859f2a9e8dd6a96b667f1b",
    "signer": "0xC789b473E10EF4b57f078893a38DD5E462d94368",
    "userId": "564344"
  }
}