{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4850",
    "entityType": "User",
    "nonce": "0x4a1acb83b07f8febc1b6a737c4bf1011bfe6f759db81d147b6834169c5a8b6e8",
    "signature": "0xa0c81a448f92779565280776606cd420d5bc09c7ca8452421e9ea4c68ae43821250b4606cec628cc2e4501ae87c2a72537782593458bc8bea7ae5042cd326b631c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}