{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16666",
    "entityType": "User",
    "nonce": "0x2da0f34b9e796192369702620cfde40c38215febc267659dd36b8cf726013914",
    "signature": "0xf5aacb22f18613bd74b75ad000be81f755dc7117ffc4934f42ef8132bbae33464c9c7a1240f1f4de000aef4dcb7dee1f611a8089174e51fe36a5a6f5ae7d12f81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}