{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x5a1906552ce9a8037446b21fc10daa5a83386643e2455088c68aee1b7655f170",
    "signature": "0x7049f62d5e4cd564105ea87a177ae7aada2046f279aafb505f71227339d2c8445683b4e1fadf62b5286f16eb3afa845c8d044705c6d82f0f4f9bf288580b89c91b",
    "signer": "0xE043895C8FfD2B49bac2344cB728935E7B4f61Ee",
    "userId": "777109830"
  }
}