{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15453",
    "entityType": "User",
    "nonce": "0x22916839665220a87094c2a42c8789a54d74897bd92fd23bd5c271eb6621f160",
    "signature": "0x8021560e6e6f998180a5b59492dce650288aa641865b0c05c74124761b9a44b92450510c57519b864370c469da21621cf2c9137ae11d19aa2465adfabf66437b1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}