{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1000012",
    "entityType": "User",
    "nonce": "0xd8d76bf590a294f2ec7f4454579a6df90204daa68127ae2da97ff92a24ae21cb",
    "signature": "0x61f00387a7600831b456e7ae57b74508910cf68b3daa00f7de3110ea5b127f9a4c562c5861c1381e7cd4a447fca8c9d121880c3d017ed2bdce9995e49ee402781b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}