{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21eadfdbbebe7b40028c48cae0f7b06c2e4400343558ccba52726be13e1820de",
    "signature": "0xcd9fb6d13655fb844bac034d0e2c3cd1eda26340539ec169e9723e8eb1da796d5a6a48dff739d8afd887f2a6ff2690e6929e160fc275e207436153baf84dca481c",
    "signer": "0x23aef531d0C37b2f8661Cf99163E20a20EA0484d",
    "userId": "998066284"
  }
}