{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138345",
    "entityType": "User",
    "nonce": "0x130ceed7e182cefcb6a9d63b160ee28cc7ca24466e1d910f8a9dadcc5571172f",
    "signature": "0x219b3ed5a3fa9f6b7a3adc9c9becbe9c289807b0c27bf641c68224fcb112dfd950b2b7349745c25cd016f64566cca67a77a2d32f71a97601b9bf2c4590fe4b0c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}