{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121373",
    "entityType": "User",
    "nonce": "0xf325ea5f0f48a74df04e31a4059d82f34411094f14d5ba62cb72846501653ece",
    "signature": "0x681eb8fc946e0271cd8e48e2037337abe9920c27fd5f4e7093ebf9064ad261a76d5c8b4c2f6ec4a2363b7f4b01ca5b8274756d0d94973249093d9228283ac3881c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}