{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16607",
    "entityType": "User",
    "nonce": "0xe1d97881380cc12fe4a22e3b214e7c84d8e95cb57336fedf11b88edb446efb0b",
    "signature": "0xa9f27641d1019a235738c725bb90a156cf63f45e5c0a3a0b25098f8f744b33670486dfc977dcf6bee76d83be62d8bd5a48d3004d1be19c413d8ac3c4cac7d6621b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}