{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151460",
    "entityType": "User",
    "nonce": "0x601ad5c900bd6a187864696bf4254ea00bdc94d6e2ae9ab8e847b5f4cde6df62",
    "signature": "0x303e36b4d7bd03df186cc03421407eb12754345b2a0fd701e8769d0826f8941b05532291c4b7f69679e3a942e64c5c59e1ad93ff09b17e370e6d5657c80c93531c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}