{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbb7f6b3f2e1051b3857c8f4109fed9b67e3a26d9f663d2d72c72584fc740349e",
    "signature": "0xb243e414c4184d7aa459774f8fba1a7546b322eb67f6d4dfae205b9b82f35a2132832807c249464d3f12f0230f130bb5a64c9a431c1630c3c76faf72b82661b91c",
    "signer": "0xCf2eacf459f751e649a2cCcD396D5BB7c47B7950",
    "userId": "29417884"
  }
}