{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x889f4a602c7d476e5a543a49c2185460188bc4ac7a3856d1ea342efe81acd634",
    "signature": "0x4b30175a22240fb95474283377f9c0c596f9216fdb35beb53fda85521a24e8ee49ea556b37636bfef17f28b01cb69718f2daac4d69f30fc74d13a2e0a71858b31c",
    "signer": "0xF146DAbBEa4a64091535c0e39A419D65150Fa66c",
    "userId": "449203874"
  }
}