{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298995",
    "entityType": "User",
    "nonce": "0x354101639e38f707c77782396d2e8ff98e328eb52089a22d42a9f40f8c69e1a1",
    "signature": "0x1eaa265ca97640014b62531cccf773346869972f739ddbbed03ff23d0b0b35e14e37046eb42110d54835f629e2931852981b48000671ecb35e1dc1fab34ef3261c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}