{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15807",
    "entityType": "User",
    "nonce": "0x613a2e735e05c1b68391a8ffb3c5ceff25fa622f591ffcf173738325788083d2",
    "signature": "0xfefbb5939ed24ad1e2600d9bb825b15b81601ad6aa0a63fa05b241cfcd27f52c5f56d7567202f07f7bdf7ef2f8fc61a61ee525f3c87a71ae57b5d2400cb46c361c",
    "signer": "0x90D649f24D80ffa4231f650fBE75e9Af27283497",
    "userId": "367633290"
  }
}