{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7f1fc5cfb1cf1d618cce915ec7e0eb524d2d2214ea6c56cf6dfe9162a6339c8",
    "signature": "0xf682f00d563a7c64410b1b7958562eed732c7e21665d5005c96338a01ec3b8f608956b12f92ee3b047031d48006cbddfbe0f107d023bc9df55ea4fe8ad2b1d7e1c",
    "signer": "0xE5EA89C11125E62d27764f91F89d06f741D3f34D",
    "userId": "125637459"
  }
}