{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851552461",
    "entityType": "User",
    "nonce": "0x7a139312e91aa7e0c28c370e0e87daf5e58fdc17b4cf477061b23eb7fc2065e7",
    "signature": "0xb249ee123a33605a36707a57017b21532f1d6132cd4613d89f4abe27f5b745cf345d5ef74b16bf7c063d6924db1c76f56a5cce4b312f553c27c0037d9e37d9f41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}