{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12728",
    "entityType": "User",
    "nonce": "0x1da14deb8dc21ced5aff624b519cc6822d77332b1c2377d99336ce058e056ca7",
    "signature": "0x9a496bfb49a8adaa51d4f0f74848fc8223d345e82e2b9cf2b33f48786335ac347b36c6a769e6137085232599cd788f5d918da5005678d5ce1008ef94eac3dd7c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}