{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222370",
    "entityType": "User",
    "nonce": "0x3e74adf0365d5ec251ea87d4c30893a0937caf987961ee7849b73b3ffd3c6496",
    "signature": "0x8bfa90aa5d27ce451475e4bc458a0981b91e78e8f2cf23e811a7aa0dd9fe17f603871bd5ade260bbb315719300bf67dee6330420bb9b652dcbe9afb2817575891b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}