{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "823",
    "entityType": "User",
    "nonce": "0x694146bd2e5e0f0e946e9225fbeb30f2944b9e2c67f7a89bacb6ae75cf3a9be4",
    "signature": "0x093721021e40c9eab1af715fadff781e7a99d1561fde6ceea5a204c892f9392d1e8b2e53325dcff243f957bff3bc4ade8da03384cc1e0a085080ff95301fb1b11c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}