{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "83331354",
    "entityType": "User",
    "nonce": "0x7b9ebf1e2cf01430c6ba5832e736b4c42cda0a564526f39b18c90fb465600fe1",
    "signature": "0x363de481b7afdb8a72fd112d05f4a2c4c4f7a7d13b6c03dc3ef83e918819e70009c4ca755e42a0402493cd4d722539489e5523c88c2590f60e247b031f20a0b01c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}