{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324732",
    "entityType": "User",
    "nonce": "0x3a81afb0a5ca716ddc9c40c5f59c7f41a55bf16813f1747fa5980ee1b7645852",
    "signature": "0x1d7e3b3d617102579e88f284d55b9cbeb48f809f1f20baff2f374bb748b498d16e2e77dbadc711d8c1c4f554a7a6f6b37a0f170ed16f37fb767a10e87cdb2be01c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}