{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b4a8d73fdf58f51de8e50cf982570db14f3a2db1eaf3fc23859d349039a9b8a",
    "signature": "0xaa8bd4ae45cdcce0efdda1cdb79b4399159280ff739007728f65bc67ddf134ec0d4d3c818d6b1acfba5ed537e4a0eb8b0a4474c398be59cb76efded068392aa51b",
    "signer": "0x5e81D472A24C21185113077e9e77CF54C1f4876F",
    "userId": "971578908"
  }
}