{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5b99ac711d8b94489377b76b482f1cd97ae916a29a29af3d76e2dd4d2c95c9d",
    "signature": "0xc9370dc57fa23d2430f1a6f035bfacbdb842aefc1c983387379b373c6cf88489486fa1a3e367caa01eaa22ef6dfa8af481d3a47fd74a8e315d7362db08101a051c",
    "signer": "0xeC98A6dd35C361d0579625Aa50E443798f3f7c12",
    "userId": "21971210"
  }
}