{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7243",
    "entityType": "User",
    "nonce": "0x5a2a5d059b25744bd98fadcdcb714ae973dabb85940d7760ea6c9a63e63dfd48",
    "signature": "0xf58e6d4af157f2a0b4fa08ec949c0ee53ad3d02ef517c9a4dd577f504a92785d04f2ab3497b39c7e10a10b6eaadf8be6c8cb74d2d5e2f35906c41698d28e046e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}