{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305415280",
    "entityType": "User",
    "nonce": "0x8a74e33b687c24e8cddac5ba58259be138360e14da1eb641570a8a0bffedfe38",
    "signature": "0xa44edb68459bcbc0a3db02e97f0d63d54394a372ce21b480df64d94062e9964219fea7822a049890639c6fd53311e463d55bbd0ed48261baf12fbdffa2682eb11b",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}