{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52603",
    "entityType": "User",
    "nonce": "0x2c76a475d02e1230e48897bdb5fa45ea1a80b0ee19eb45373eaec74cc7f1554f",
    "signature": "0xd75f4693f475fea89fce168f62c3f44d22d338114f90f97109f279e3c888e3d56557b52175a99bf783d3ec19030f5a5a21ae0568540cd06a3777eff6d9c0e7131c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}