{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x907690d05bb89567c9a615dcfa80c00fb2cde7d52463b6bb3e24f7a4d726b057",
    "signature": "0x7c9fa6cda76336296aa57d3e6cd33b27d3c26a416356ae0a4dbe24de3b71a20e3bd3096653c2f62e16c2f6fdf4a1c8be17e952c1fec15b66a5d1c67991c67c301b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}