{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387435",
    "entityType": "User",
    "nonce": "0xdfe4ef5a5a36e8079e2fb436b95b4975fb69a421aa7d365d858d366cdf57ed73",
    "signature": "0x96193624f7d3dbf7b19189d05869b814e38f4db98fe2dd94d28751d08d00fa1f62950b16665ca4da5f95bf13a10b78338fece0aaca5dd496d28c635074bb37371c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}