{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x0866bec9fa121560df7187d306b55dd36bc2b05cd764634384f110865b646e24",
    "signature": "0x063288b07115cf94310514f9c6f9ede0282772ba2a1c734e0b666c26a601a0ec69272d58f140c1322f11945d1025ddc4993f5131bcd1895dcefc0e400da711b71b",
    "signer": "0xfB6436C438F897b7eA739876B4Cfcca832868820",
    "userId": "512354652"
  }
}