{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1885043",
    "entityType": "User",
    "nonce": "0x7f90971662cfd543a30dde13a3607b0ace3e0aca970b4082abd8b562ac998cbf",
    "signature": "0x918de8d728388a4a343968768bf6f9e9ec8e10e6c4d1e4b67f591be7bb60572b46b84f051a83727709335db08a5d9438140feac5e2641b7d09a5dec8a9052a231c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}