{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dc04bacba2d61c309d0c6cfeddf46fea1ced64a28b1675048cf465d6100e6a8",
    "signature": "0x109a5b75633e7337971532960da2cf06e56c3771f143ee22c280ebcb90aa2a662601a9dcd31e01bcd0482ff12cddfde1ee8a00de79c4a4355d35380609c873d81b",
    "signer": "0x9d291c3d255b974fe494F9679cb470BC6Ec7CA05",
    "userId": "905328931"
  }
}