{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1619",
    "entityType": "User",
    "nonce": "0x2c4c13889ac6499d6bfd1be10cc8e1d41f968538a062d9999b2f1b82a835ef0a",
    "signature": "0x0d60efa4fc176ab3c3b8dc68e0d7afbaaf309b444a1daf45e127c0f3680faa19789d305517a24935b81ec22ac8cba840a6086a37d83204e139897184ac0224af1b",
    "signer": "0x49725020a21cF6A928575eE04a5506771Fc95916",
    "userId": "908506084"
  }
}