{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x5ee9dc1b4be45f83d3778de77d51fa5897cedad74ba009b266c5ba46c5871723",
    "signature": "0x88c856df582a229cac4aaee888a6b49d05148f33ab17199eb8c234f37f9dfafb0a7af759f403367e98a9561b06cb9f4a99d1556616678d1cd48bde1081f4be001c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}