{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "419921",
    "entityType": "User",
    "nonce": "0xb3a2547eecb64c7c9a1e1a49b8fb2935ccab825d5b40f662515d1fe5e7303f3d",
    "signature": "0x87febcdee217212b945ede0d048098ca21eda196232e29b24d3d676dbbaac53b1527e31fdb7956f704baadd3c60fe1c2371b2c1d52f3ded86eded561b7ef26d91c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}