{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1437404a152083804b98fdcdba7b425b65439d0840a6e744a122e3ac3256babe",
    "signature": "0xc56fdceaf3d7eacdb285dcb576b87e27dcb09139e77592f302f90341d59dec4b0fe9c35ac1292df374bba00601458f18961f7033288e721225d24ad91d3c7d641b",
    "signer": "0x3442AB72e308dE3423378325479b2A0b71413435",
    "userId": "690207054"
  }
}