{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9cfef9f5b9bfe5e123a4eb909edd968d945f3c0e970495584e9d3d452ec97932",
    "signature": "0x5d42083deb5b09218d72000bff00760de1d602e606603ca601d574757cc26ae8641a8d29d4cce15f0a19a7c7872fe151581936f992f67f7f558f54cee1e7d5441b",
    "signer": "0x16F858c4A1204EFce8c84B80C23c9D10Ea2FEB17",
    "userId": "832663986"
  }
}