{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3541",
    "entityType": "User",
    "nonce": "0xc686875f0e36ac36b7c177d2c544cef7afc95ec2ccf2b70dc5793addcfbc747d",
    "signature": "0xbf0a92197141f9fc8b3dd778b7a5e73a97459af7734dc74208f34f102e302ca3620c20851f0c2b3aa49885343d03db5773d35754d789670535da8fd2e4426fc01b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}