{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5649b60f2ed856a6a5233cc512b9065d759b21b8f3652e07c91d114e6a41e22",
    "signature": "0x4423713371719faf172e39e0b18a6b11545dbea980c07c2daaab77b8bcf774fd09fe8e8fabaeeb0538ab978d728e1dd40d0d5e4044f59ac515fabc5bae1e128a1b",
    "signer": "0xBC607D243ad6E7a3aD451974f36DaB3e3B48fBdc",
    "userId": "28406951"
  }
}