{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556395670",
    "entityType": "User",
    "nonce": "0x4ad4cbbc95189479bb53d5929ab2650e7782c125b995d40876a7a8c1009858f0",
    "signature": "0xa8d28953c7f6b4d6e247d86c4f640b28758b4e659ba08310c30d618228d2edf83753a66b8172e360811c4fb588d2cc32c2a31fdb5b015d0f62c3b4b221c6646d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}