{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499136071",
    "entityType": "User",
    "nonce": "0x032419e9892029a4afd1536361a5449398784e4149f307c8f29c7437503391aa",
    "signature": "0x18c5d5e92403b45b7129a0a633413a4cc863306ccb105ba466f10d08034e557e4b928833a01a5d6fcc24a73cf54db63e64597fb0657eb9822bf1bdaaa62c92801b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}