{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391444",
    "entityType": "User",
    "nonce": "0x426b063a1380fae720e1ae42d2fc66c5128d2431a933185a61fd538ddcf680e8",
    "signature": "0x00817a7e2d13d456e65325efc728eef09602c02fc68dba3a14f401b78b03bb8a329a2683f8d79e23b0da3e262815870eccb02b32a350c3f05a4d36a4422ff6461c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}