{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "614212580",
    "entityType": "User",
    "nonce": "0xa57d5819cffd0c98f7155a937309e16c76c75fc0484ac6c10d6a3e374657a44e",
    "signature": "0xd49ee373e4725797bade9f7e5202e5a4e2d806c139ca653eb5e70a0652e62ca065915cf1678c4d70f8eb29a6d14d6a78dfae665dab6d71d633583b989f83c3121b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}