{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450",
    "entityType": "User",
    "nonce": "0xcab8d6cbaf0ef94344ab230c95b919372d1a86fff7779d40e68ef5c98803716f",
    "signature": "0xaf768cd6528b719d8e086c9ea1a809a7ef63a80c96be6a24b98ffebc2ed6c7e76ff41a10542c006ebeac0592dd096e4f1982927044b3d5d2f82ea119c913f5bd1c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}