{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x7eee000bda83ca0b1454998a9e50fcf67932463da642277f4410b7b20712383a",
    "signature": "0x313ed760c0d9026a178238afe88c3240d576ee39fac75d34c362e277bee39e1c44a1dadd11ce9a450d3b51c001643cec74c3fbedc67cf67e8015da0339b0b8221c",
    "signer": "0xD24F8A2501472e4c9FD5dfCCDF80B550912c7FB0",
    "userId": "887242445"
  }
}