{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212517",
    "entityType": "User",
    "nonce": "0x9fc1cfd6003a31bbfde2fa8a6fb70b1d64ef52350bc7f9c10d3ac8dff431d781",
    "signature": "0x451d1189238f5b6e796686de774ea16f14b0a5993126e173371cd6ba25953015199a13d451c389c5e0af3cb901a67bb7ebfa8b75fbfb792d44d55beadbadde5f1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}