{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7426ef5c86009ac851acbc68f2b6626e0854d9b3493c3b178e2f75509e126e2d",
    "signature": "0xa9fc9c07f5fe1547148011a20f7453c1cfb46597b769220a3a9219d3c5ea65541f71ee75e19589b1ded6623dbddca4edf26c8a0c8b85bc75f682ccd9e4677b511b",
    "signer": "0xbc213812a364418e74f576Bdb6AF26f544a0e687",
    "userId": "408215656"
  }
}