{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xf88ffb6818a352c08c7df7296bd53cdba4f97d8a8596a660cc05523d250429ba",
    "signature": "0xb4f0a6f0c811662eafb32688494aa3736f7453532505b8157209c504709a88cc0ebe4b6a78b04c23dcabcbdcbbafbdadc70fe54e553a6ef34132b7fd7119c2de1c",
    "signer": "0xb8909c41963586dbBe3EbbAB4FC8F1f8E6970Ce2",
    "userId": "435332232"
  }
}