{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "531804713",
    "entityType": "User",
    "nonce": "0x2efb216677d6fd5c149f8b965f7e9e62455f9509eed7c4839cd5ad884446a984",
    "signature": "0xc34a2bf0716960a963202c01c5572b11d6f2b2121c8dce6d9008d30043db2ed51cd532dcc3ea256bc3def7bbcf560b586badf51e1736edc224b9a388f8ccc05e1c",
    "signer": "0x3dbd449350c4B4422bF1f34E07b505f67788a59F",
    "userId": "189881717"
  }
}