{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9965ef43e7a357986def43b465ac53d1a68199a98f636b61361a21d5b54ab4f4",
    "signature": "0xb702ad65a365e3322f43c2e51a5d289f5188b3724aeeb0364c994dc38cab95752e5ca5458e9ae1c4b0e457839e2a69e3bd4e5d7fb2828e949b451e49847e165e1b",
    "signer": "0xe9B6cbf0276Ca97F9eE6D53Cd40E8BaaE2a78232",
    "userId": "64519294"
  }
}