{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372771",
    "entityType": "User",
    "nonce": "0x4687f6340f1fa83548b00eb35c52d55712cd4dcf66ea199b113bbc2eeba96320",
    "signature": "0x4be1e874b3d629c9e6bd8fd6d201d7212a1253b3a97c6f587d0b180acb28df476a0f36746013175b8d8d81c6b697453bc37fcc3bb599fd9d40d2f4830565b0911b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}