{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x69becc2c1a831920e6a45108d42b8ecdbea78add7a078bef4e69b932bb10b580",
    "signature": "0x15f1e8fdb366b29f4d43ceed795a0aad43f7b9c394e8d22ea883de72537ba11f74be69aa18cbd28e453aa717cd4bf46a55c09ccb959d21045836ac3ac40e0e431b",
    "signer": "0x91b4Be04AAd78c3803b5a79B4585f1A6712eED3F",
    "userId": "574305165"
  }
}