{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "856",
    "entityType": "User",
    "nonce": "0x3431c4768d0938e8d8c272cb79bbcb707b79869d7ecfa95daabecf5b20f1d9f2",
    "signature": "0xa3eb97bf85ffbe2d9f53f2fd8b994a78006c162e1554824719c0f73eb0dd605d67dc9e0fa3db636066700d88ddeff86aa41f8a441b799d80c23cb384e4e2a4ba1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}