{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1678711",
    "entityType": "User",
    "nonce": "0x4fd4d4980bc00c9f76d12307b248f65262a699c3e2bc74cb48828a4f862797d8",
    "signature": "0x3539248f489111aaeb0e8105806e32c9f50552997396980683b08ab84f6b3e7039764226d787fee38d314eb1981d32faf8c18c0fdd2542545382ca42caa5dd9b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}