{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe51c9d63a4465c2426d36c9590b6bfd081b590a23adef69705e91d0e2d66497c",
    "signature": "0xf3cc5cb464fbf9d3d74d8f6ff2ee2ed5da3284f8f0274198bd06cbe15089e44f50b1ef29c59f9f00e774fce0a401e6d09498e61d5d32fd57e89f6d41b7b54c3e1b",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}